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<meta name="description" content="TypeScript: SwimLaneLayout, laying out the whole graph while assigning nodes to stay in lanes/groups."/> 
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<title>Beat Paths with Lanes for Divisions Using SwimLaneLayout</title>
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          <h1 class="mb-0 p-1 ">GoJS</h1>
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    <!-- Start of GoJS sample code -->
    
    <script src="../release/go.js"></script>
    <div class="p-4 w-full">
<script src="SwimLaneLayout.js"></script>
<script id="code">
var DIRECTION = 90;  // used to customize the layout and the templates, only upon first initialization

function init() {
  if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this

  var $ = go.GraphObject.make;  // for conciseness in defining templates

  myDiagram =
    $(go.Diagram, "myDiagramDiv",
      { // automatically scale the diagram to fit the viewport's size
        initialAutoScale: go.Diagram.Uniform,
        // disable user copying of parts
        allowCopy: false,
        // position all of the nodes and route all of the links
        layout:
          $(SwimLaneLayout,
            {
              laneProperty: "group",  // needs to know how to assign vertexes/nodes into lanes/groups
              direction: DIRECTION,  // Group template also depends on DIRECTION
              setsPortSpots: false,
              layerSpacing: 20,
              columnSpacing: 5,
              commitLayers: function(layerRects, offset) {
                if (layerRects.length === 0) return;

                var horiz = (this.direction === 0 || this.direction === 180);
                var forwards = (this.direction === 0 || this.direction === 90);

                var rect = layerRects[forwards ? layerRects.length - 1 : 0];
                var totallength = horiz ? rect.right : rect.bottom;

                for (var i = 0; i < this.laneNames.length; i++) {
                  var lane = this.laneNames[i];
                  // assume lane names do not conflict with node names
                  var group = this.diagram.findNodeForKey(lane);
                  if (group === null) {
                    this.diagram.model.addNodeData({ key: lane, isGroup: true });
                    group = this.diagram.findNodeForKey(lane);
                  }
                  if (horiz) {
                    group.location = new go.Point(-this.layerSpacing / 2, this.lanePositions.get(lane) * this.columnSpacing + offset.y);
                  } else {
                    group.location = new go.Point(this.lanePositions.get(lane) * this.columnSpacing + offset.x, -this.layerSpacing / 2);
                  }
                  var ph = group.findObject("PLACEHOLDER");  // won't be a go.Placeholder, but just a regular Shape
                  if (ph === null) ph = group;
                  if (horiz) {
                    ph.desiredSize = new go.Size(totallength, this.laneBreadths.get(lane) * this.columnSpacing);
                  } else {
                    ph.desiredSize = new go.Size(this.laneBreadths.get(lane) * this.columnSpacing, totallength);
                  }
                }
              }
            })
    });

  // replace the default Node template in the nodeTemplateMap
  myDiagram.nodeTemplate =
    $(go.Node, "Vertical",  // the whole node panel
      { // when the DIRECTION is vertical, use the whole Node as the port
        fromSpot: go.Spot.TopBottomSides,
        toSpot: go.Spot.TopBottomSides
      },
      $(go.TextBlock,  // the text label
        new go.Binding("text", "key")),
      $(go.Picture,  // the icon showing the logo
        // You should set the desiredSize (or width and height)
        // whenever you know what size the Picture should be.
        {
          desiredSize: new go.Size(50, 50),
          // when the DIRECTION is horizontal, use this icon as the port
          portId: (DIRECTION === 0 || DIRECTION === 180) ? "" : null,
          fromSpot: go.Spot.LeftRightSides,
          toSpot: go.Spot.LeftRightSides
        },
        new go.Binding("source", "key", convertKeyImage))
    );

  function convertKeyImage(key) {
    if (!key) key = "NE";
    return "https://www.nwoods.com/go/beatpaths/" + key + "_logo-50x50.png";
  }

  // replace the default Link template in the linkTemplateMap
  myDiagram.linkTemplate =
    $(go.Link,  // the whole link panel
      { routing: go.Link.AvoidsNodes, corner: 10 },
      $(go.Shape,  // the link shape
        { strokeWidth: 1.5 }),
      $(go.Shape,  // the arrowhead
        { toArrow: "Standard", stroke: null })
    );

  myDiagram.groupTemplate = // assumes SwimLaneLayout.direction === 0
    $(go.Group, (DIRECTION === 0 || DIRECTION === 180) ? "Horizontal" : "Vertical",
      {
        layerName: "Background",  // always behind all regular nodes and links
        movable: false,  // user cannot move or copy any lanes
        copyable: false,
        locationObjectName: "PLACEHOLDER",  // this object will be sized and located by SwimLaneLayout
        layout: null,  // no lane lays out its member nodes
        avoidable: false  // don't affect any AvoidsNodes link routes
      },
      $(go.TextBlock, { font: "bold 12pt sans-serif", angle: (DIRECTION === 0 || DIRECTION === 180) ? 270 : 0 },
        new go.Binding("text", "key")),
      $(go.Panel, "Auto",
        $(go.Shape, { fill: "transparent", stroke: "orange" }),
        $(go.Shape, { name: "PLACEHOLDER", fill: null, stroke: null, strokeWidth: 0 })
      ),
      $(go.TextBlock, { font: "bold 12pt sans-serif", angle: (DIRECTION === 0 || DIRECTION === 180) ? 90 : 0 },
        new go.Binding("text", "key"))
    );

  partitionBy('d');
}

// the array of node data describing each team, each division, and each conference
const nodeDataArray = [
  { key: "AFC", isGroup: true },
  { key: "NFC", isGroup: true },
  { key: "AFCE", isGroup: true },
  { key: "AFCN", isGroup: true },
  { key: "AFCS", isGroup: true },
  { key: "AFCW", isGroup: true },
  { key: "NFCE", isGroup: true },
  { key: "NFCN", isGroup: true },
  { key: "NFCS", isGroup: true },
  { key: "NFCW", isGroup: true },
  { key: "NE", conf: "AFC", div: "AFCE" },
  { key: "PIT", conf: "AFC", div: "AFCN" },
  { key: "DAL", conf: "NFC", div: "NFCE" },
  { key: "CLE", conf: "AFC", div: "AFCN" },
  { key: "NYG", conf: "NFC", div: "NFCE" },
  { key: "GB", conf: "NFC", div: "NFCN" },
  { key: "SEA", conf: "NFC", div: "NFCW" },
  { key: "IND", conf: "AFC", div: "AFCS" },
  { key: "MIN", conf: "NFC", div: "NFCN" },
  { key: "PHI", conf: "NFC", div: "NFCE" },
  { key: "DET", conf: "NFC", div: "NFCN" },
  { key: "JAC", conf: "AFC", div: "AFCS" },
  { key: "SD", conf: "AFC", div: "AFCW" },
  { key: "CHI", conf: "NFC", div: "NFCN" },
  { key: "TB", conf: "NFC", div: "NFCS" },
  { key: "KC", conf: "AFC", div: "AFCW" },
  { key: "DEN", conf: "AFC", div: "AFCW" },
  { key: "TEN", conf: "AFC", div: "AFCS" },
  { key: "BUF", conf: "AFC", div: "AFCE" },
  { key: "OAK", conf: "AFC", div: "AFCW" },
  { key: "HOU", conf: "AFC", div: "AFCS" },
  { key: "ATL", conf: "NFC", div: "NFCS" },
  { key: "WAS", conf: "NFC", div: "NFCE" },
  { key: "CIN", conf: "AFC", div: "AFCN" },
  { key: "NYJ", conf: "AFC", div: "AFCE" },
  { key: "CAR", conf: "NFC", div: "NFCS" },
  { key: "NO", conf: "NFC", div: "NFCS" },
  { key: "BAL", conf: "AFC", div: "AFCN" },
  { key: "MIA", conf: "AFC", div: "AFCE" },
  { key: "ARI", conf: "NFC", div: "NFCW" },
  { key: "STL", conf: "NFC", div: "NFCW" },
  { key: "SF", conf: "NFC", div: "NFCW" }
];

// the array of link data objects: the relationships between the nodes
var linkDataArray = [
  { from: "NE", to: "CLE" },
  { from: "NE", to: "DAL" },
  { from: "NE", to: "IND" },
  { from: "PIT", to: "CLE" },
  { from: "DAL", to: "NYG" },
  { from: "DAL", to: "GB" },
  { from: "CLE", to: "SEA" },
  { from: "NYG", to: "DET" },
  { from: "GB", to: "MIN" },
  { from: "GB", to: "PHI" },
  { from: "SEA", to: "PHI" },
  { from: "SEA", to: "CIN" },
  { from: "IND", to: "TB" },
  { from: "IND", to: "JAC" },
  { from: "MIN", to: "SD" },
  { from: "PHI", to: "NYJ" },
  { from: "DET", to: "CHI" },
  { from: "DET", to: "DEN" },
  { from: "JAC", to: "DEN" },
  { from: "SD", to: "DEN" },
  { from: "CHI", to: "OAK" },
  { from: "TB", to: "TEN" },
  { from: "DEN", to: "TEN" },
  { from: "DEN", to: "KC" },
  { from: "DEN", to: "BUF" },
  { from: "TEN", to: "OAK" },
  { from: "TEN", to: "ATL" },
  { from: "TEN", to: "HOU" },
  { from: "BUF", to: "WAS" },
  { from: "OAK", to: "MIA" },
  { from: "HOU", to: "MIA" },
  { from: "HOU", to: "CAR" },
  { from: "WAS", to: "NYJ" },
  { from: "WAS", to: "ARI" },
  { from: "CIN", to: "BAL" },
  { from: "NYJ", to: "MIA" },
  { from: "CAR", to: "ARI" },
  { from: "CAR", to: "STL" },
  { from: "CAR", to: "SF" },
  { from: "NO", to: "SF" },
  { from: "BAL", to: "STL" },
  { from: "BAL", to: "SF" }
];

function partitionBy(a) {
  // create the model and assign it to the Diagram
  var model = new go.GraphLinksModel();
  // depending on how we are partitioning the graph, each node belongs either
  // to a conference group or to a division group
  model.nodeGroupKey = (a === 'c') ? "conf" : "div";
  model.nodeDataArray = nodeDataArray;
  model.linkDataArray = linkDataArray;
  // each node's lane information is the same as the group information
  myDiagram.layout.laneProperty = model.nodeGroupKey;
  // optionally, specify the order of known lane names, without setting laneComparer
  myDiagram.layout.laneNames = (a === 'c') ?
    ["AFC", "NFC"] :
    ["AFCE", "AFCN", "AFCS", "AFCW", "NFCE", "NFCN", "NFCS", "NFCW"];
  myDiagram.model = model;
}
window.addEventListener('DOMContentLoaded', init);
</script>

<div id="sample">
  <p><b>Beat Paths</b>: The 2007 NFL Season, divided by conference or by division</p>
  <div id="myDiagramDiv" style="border: solid 1px gray; margin: 10px; height: 700px"></div>
  <input type="radio" name="A" onclick="partitionBy('c')" id="conferenceButton" />
  <label for="conferenceButton">Conferences</label><br />
  <input type="radio" name="A" onclick="partitionBy('d')" id="divisionButton" checked />
  <label for="divisionButton">Divisions</label><br />
</div>
    </div>
    <!-- * * * * * * * * * * * * * -->
    <!--  End of GoJS sample code  -->
  </div>
</body>
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<script src="../assets/js/goSamples.js"></script>
</html>
